Inhalation spacer



FIG. 1 is a front, top perspective view of an inhalation spacer showing our design;

FIG. 2 is a front view thereof, the rear view being a mirror image thereof;

FIG. 3 is a left side view thereof, the right side view being a mirror image of the left side view; and,

FIG. 4 is a top view thereof.

The broken lines in the drawings illustrate portions of the inhalation spacer which form no part of the claimed design. 

CLAIM The ornamental design for an inhalation spacer, as shown and described. 